Pre-production app, no need to preserve incremental migration history:
replace the 26 migration files with one current-state schema.sql (the
schema.sql comments are now the living documentation), simplify db.go to
apply it once instead of tracking/rebuilding through schema_migrations,
and make user_id NOT NULL everywhere now that there's no staged migration
to accommodate a nullable backfill window.
This removes the reason ClaimLegacyOwner/GENIUSRUN_LEGACY_OWNER_OIDC_SUB
existed (binding a pre-existing singleton-schema database to one account
across a staged migration), so that whole path is gone too -- the
existing dev database was wiped and reseeded fresh under the new schema.
Add cmd/dumpschema, which regenerates docs/DATABASE.md straight from the
live schema (via store.Open + sqlite_master introspection) so the
database documentation can never drift out of sync with reality.
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
